Cannot edit some fields in my address book contact
I tried changing the value of the field "Displayed name" (I am translating this from the French, I hope it is correct) and select the default email address of that contact, then clicked "Save". It briefly (for a second or so) displayed the contact correctly (with the new displayed name and selected default email) but then reverted immediately to the previous values. When I clicked to edit it, the changes I had made had disappeared. How do I set the values in a contact??? Thanks.